Quantum electric dipole glass and frustrated magnetism near a critical point in Li2ZrCuO4 / Vavilova E.,Moskvin A. S.,Arango C.,Sotnikov A.,Drechsler S. -L.,Klingeler R.,Volkova O.,Vasiliev A.,Kataev V.,Buechner B. // EPL. - 2009. - V. 88, l. 2.

ISSN/EISSN:

0295-5075 / нет данных

Type:

Article

Abstract:

We report a new peculiar effect of the interaction between a sublattice of frustrated quantum spin-1/2 chains and a sublattice of pseudospin-1/2 centers (quantum electric dipoles) uniquely co-existing in the complex oxide gamma-Li2ZrCuO4 ( Li2CuZrO4). Li-7 nuclear magnetic resonance, Cu2+ electron spin resonance and a complex dielectric constant data reveal that the sublattice of Li+-derived electric dipoles orders glass like at T-g similar or equal to 70 K yielding a spin site nonequivalency in the CuO2 chains. We suggest that such a remarkable interplay between electrical and spin degrees of freedom might strongly influence the properties of the spiral spin state in Li2ZrCuO4 that is close to a quantum ferromagnetic critical point. In particular that strong quantum fluctuations and/or the glassy behavior of electric dipoles might renormalize the exchange integrals affecting this way the pitch angle of the spiral as well as be responsible for the missing multiferroicity present in other helicoidal magnets. Copyright (c) EPLA, 2009

Author keywords:

нет данных

DOI:

10.1209/0295-5075/88/27001

Web of Science ID:

ISI:000271963700025

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	OCT
Publisher	EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Address	6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
Language	English
Article-Number	27001
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	v.kataev@ifw-dresden.de
ResearcherID-Numbers	Sotnikov, Alexandr/I-6836-2017 Klingeler, Rudiger/E-5941-2010 Buchner, Bernd/E-2437-2016 Kataev, Vladislav/N-6399-2017 Vasiliev, Alexander/A-7562-2008 Volkova, Olga/A-4072-2008
ORCID-Numbers	Klingeler, Rudiger/0000-0002-8816-9614 Buchner, Bernd/0000-0002-3886-2680 Kataev, Vladislav/0000-0003-2147-2616 Vasiliev, Alexander/0000-0003-3558-6761 Volkova, Olga/0000-0001-7853-4801
Funding-Acknowledgement	DFG {[}436 RUS 113/936/0-1, DR269/3-1, KL1824/3-1]; RFBR {[}08-02-91952- NNIO-a, 07-02-01184-a, 06-02-17242, 0702-96047, 08-02-00633]; EU Programme Alban
Funding-Text	Support of the DFG ( grants 436 RUS 113/936/0-1, DR269/3-1 and KL1824/3-1) and the RFBR ( grants 08-02-91952- NNIO-a, 07-02-01184-a, 06-02-17242, 0702-96047, and 08-02-00633), is gratefully acknowledged. YCA acknowledges support of the EU Programme Alban. We thank A. A. Zvyagin and N. M. Plakida for discussions.
Number-of-Cited-References	18
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	14
Journal-ISO	EPL
Doc-Delivery-Number	521YX